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Structural analysis and electrical properties of halogen substituted poly(paraphenylene)
Author(s) -
Mertens R.,
Krikor H.,
Nagels P.,
Callaerts R.,
Remaut G.
Publication year - 1991
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760310609
Subject(s) - materials science , raman spectroscopy , polymerization , differential scanning calorimetry , infrared spectroscopy , polymer , infrared , phenylene , doping , polymer chemistry , halogen , analytical chemistry (journal) , degree of polymerization , organic chemistry , chemistry , optoelectronics , composite material , optics , physics , alkyl , thermodynamics
Poly(tetrafluoro‐p‐phenylene) was prepared by the modified Ullmann reaction. The average degree of polymerization was determined from electron impact mass spectrometry and was found to be n = 8. The structure of the polymer was studied using infrared, Raman, ultraviolet absorption spectroscopy and differential scanning calorimetry. Polymerization of 1,4‐diiodo‐2,3,5,6‐tetrafluorobenzene resulted in the disappearance of the characteristic C‐I vibrations and the appearance of new absorption bands in the infrared and Raman spectra. At room temperature poly(tetrafluorophenylene) is an insulator. Attempts to increase the dc conductivity on FeCl 3 and sodium doping were unsuccessful until now.